There may not be a shortage now, but the need is always there. Here’s where you can donate.

In the wake of yesterday’s tragedy, it’s easy to feel helpless. But if you’re looking for something you can do, consider giving blood. Though the Red Cross tweeted yesterday that there is currently enough on shelves to meet demand, organizations and area hospitals are encouraging people to schedule a donation appointment for the coming days and weeks. Here’s where you can do it:

Thanks to generosity of volunteer blood donors there is currently enough blood on the shelves to meet demand. #BostonMarathon

The American Red Crosshas a Boston blood donation location on Tremont Street, as well as centers in Danvers, Worcester, Braintree, Raynham, Dedham, and Springfield. Visit redcrossblood.org for more information.

Around the Web:

Please be respectful of our online community and contribute to an engaging conversation. We reserve the right to remove impersonators or personal attacks, threats, profanity, or flat-out offensive comments. By posting here, you are permitting Boston magazine and Metro Corp. to edit and republish your comment in all media.